In the first set of pictures I can see that the J8 at f/4 has a much higher contrast than the other two lenses.
I noted a similar thing with my Jupiter 8 opened up. At f/4, the contrasts simply are shot from a cannon and suddenly I have a picture with 256 tonalities from which 120 are white and 120 are black... does somebody know why this happens?
I was comparing the Summitar and the J8. At f/8 and smaller apertures, they are VERY similar lenses. But when opened up, the contrasts on the J8 are remarkedly increased to the point I lose a lot of detail both on shadows and highlights. The same picture on the Summitar and the distribution of grays and difference between zones is fine.
Does somebody know why this may happen?
Cheers
Bas.